Lenzer, J. (2004). Crisis deepens at the US Food and Drug Administration. BMJ Group.
Chicago Style aipamenaLenzer, Jeanne. Crisis Deepens At the US Food and Drug Administration. BMJ Group, 2004.
MLA aipamenaLenzer, Jeanne. Crisis Deepens At the US Food and Drug Administration. BMJ Group, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.